Lactic acid/wood-based composite material. Part 2: Physical and mechanical performance.

Area of Science:

• Materials Science
• Polymer Science
• Wood Science

Background:

• Part 1 detailed the synthesis of a novel bio-composite material.
• This research continues the investigation into wood-lactic acid oligomer composites.

Purpose of the Study:

• To comprehensively assess the physical and mechanical performance of the novel bio-composite.
• To identify key property changes resulting from the material's composition.

Main Methods:

• Dimensional stability, decay resistance, and leaching tests were conducted.
• Mechanical testing included bending, shearing, and compression.
• Hardness was evaluated using standardized methods.

Main Results:

• Significant improvements in physical performance were observed.
• High leaching mass loss occurred but did not severely degrade mechanical properties.
• Shearing resistance decreased due to middle lamella degradation; hardness increased.

Conclusions:

• The bio-composite exhibits enhanced physical properties and hardness.
• Mechanical integrity is largely maintained, with specific areas of impact.
• Further research may optimize resistance to degradation and leaching.